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| Main Authors: | , , , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2025
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| Subjects: | |
| Online Access: | https://onlinelibrary.wiley.com/doi/10.1111/ffe.70039 |
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Table of Contents:
- A Pressure Decompression Model‐Based Finite Element Approach for Efficient Dynamic Fracture Analysis in CO2 Pipelines Ying Zhen Yuguang Cao Fagen Li Wenwen Li Guiyi Wu Fatigue & Fracture of Engineering Materials & Structures ABSTRACTRunning fractures represent the most catastrophic failure mode in CO2 pipelines. Traditional engineering methods for crack prediction have proven non‐conservative, while existing fluid–structure interaction (FSI) models suffer from computational inefficiency. This study proposes a novel finite element simulation method based on an innovative three‐dimensional pressure decompression model that effectively characterizes CO2's unique thermodynamic behavior during pipeline fracture. The methodology involves three phases: establishing a simplified yet physically accurate pressure decompression model through systematic analysis of experimental data; validating the approach through full‐scale burst tests, demonstrating superior computational efficiency compared to conventional FSI methods while maintaining high accuracy; and conducting comparative analyses that reveal fundamental differences between CO2 and natural gas pipeline fracture behavior, including larger crack‐tip opening angles and more extensive plastic deformation in CO2 pipelines. These findings advance understanding of CO2 pipeline fracture mechanisms and provide an efficient computational framework for parametric studies essential for pipeline safety design. 10.1111/ffe.70039 http://onlinelibrary.wiley.com/termsAndConditions#vor